Retiring a decade-old Hyperion environment without missing a close
Representative scenario, anonymized to protect client confidentiality.
The Challenge
The legacy Hyperion build was undocumented, difficult to staff, and increasingly at risk of failure during a live close — but the business could not tolerate a disrupted reporting cycle during the transition.
The Solution
We re-platformed metadata, consolidation logic, and historical data natively in OneStream, running the new environment in parallel against live Hyperion results for two full close cycles before cutover.
The Outcome
The organization moved onto OneStream with a fully validated parallel run, retired its legacy Hyperion licensing, and closed on schedule throughout the transition.
Curious what this could look like for your team?
Bring your current environment to a discovery call and we'll give you a straight read on scope and timeline.